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Question

Physics Question on Pressure

A crowbar of length 120 cm has its fulcrum situated at a distance of 20cm from the load. The mechanical advantage of the crow bar is

A

1

B

3

C

5

D

7

Answer

5

Explanation

Solution

MA=effort armload arm=10020MA = \frac{effort \, arm}{load \, arm} = \frac{100}{20}